川保V号粉剂防治蜀柏毒蛾药效试验及应用

The Test and Application of Chuanbao V Powder

川保V号粉剂是新研制的化学药剂，药效试验，防治3～4龄幼虫用药15kg·hm^-2，在168h后虫口减退率达98．9％，林间大面积防治，同等用药量，平均虫口减退率也在90．5％以上，每公顷防治成本68元左右。川保V号防治蜀柏毒蛾效果良好，在蜀柏毒蛾高虫口林子内应用很有价值。

Chuanbao V Powder is a newly developed chemical drug and its effect has been tried out, able to prevent young pests aged 3 or 4 from harming cypresses . If 15 kg powder is sprayed per hectare , it can kill 98.9% of moths after 168 hours. If it is used to protect a vast of forest, the number of moths may reduce by 90.5% . The cost of powder per hectare is 68 yuan or so . Chuanbao V Powder has a good effect on preventing poisonous moths from attacking cypresses in Sichuan . To use this type of poison is very valuable in Sichuan.